Best MP4 to MKV Video Converters for Mac/Windows/Online to Make High Quality Videos

Megan Charles
Updated on May 06, 2022 Preview 925 Preview 0
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MKV is good at storing various videos in high quality from Blu-Ray discs, DVDs and other HD sources. In order to enjoy high-quality videos, a number of people choose to convert MP4 to MKV. There are several ways for you to achieve it, but this post aims to introduce some excellent MP4 to MKV video converters to you. If you are interested in it, please continue to read it.

Why need to convert MP4 to MKV?

MP4 is short for MPEG-4 Part 14, which is one of the most popular digital multimedia container formats to store audio and video on almost all devices. And MKV stands for Matroska Multimedia Container. Just as the name, it is a free and open multimedia container format that contains a number of audio, video and subtitles into a single file.

As we all know, MP4 has a lot of advantages, such as it can store digital file in small size while keeping high quality, has higher compatibility, can be streamed to different devices, etc. But if you take a thorough comparison between MP4 and MKV, you will find the benefits of MKV. For example:

  • Can provide videos with high quality. The codecs determines the quality of the video and audio, and MKV supports almost all codecs while MP4 needs another tool to get codecs.
  • Suitable for converting DVDs and Blu-ray discs to video file. And MP4 is widely used to play videos on a web browser.
  • MKV is an open format that doesn’t require license. Therefore, it is available on free software.
  • Supports multiple tracks and subtitles. It supports SSA/ASS subtitles and audio tracks that MP4 doesn’t.
  • MKV file can be kept for a longer time because of its fully open nature counts in its favor and files self-documenting feature.

Best MP4 to MKV video converter software

On Mac

Cisdem Video Converter is the best MP4 to MKV video converter that supports converting between many popular digital audio and video formats effortlessly, including converting MP4 to MKV. If you regard quality as the most important aspect, Cisdem Video Converter will be your first pick as it won’t reduce the original quality but will make a high-quality video for you such as 1080P, 4K, etc. Plus, Cisdem developer focuses on its operating speed and designs with a acceleration engine technology, which allows you to convert digital files at the fastest speed.

Guides on how to convert MP4 to MKV on Mac with Cisdem

Step 1Download and Launch Cisdem Video Converter

Get the software on Cisdem official website.

Open the software, you will see 3 tabs for different functions: converting digital files, rip DVDs and download online videos and music. Stay at the first interface to convert MP4 to MKV on Mac. 

convert interface

Step 2Upload MP4 files

Navigate to the folder on your computer and drag-n-drop the MP4 videos that you want to load them into the program. Or you can click “File > Add files” on the top main menu to select the files and upload them to the interface one by one. 

upload videos

Step 3Choose MKV as the output format

You will see a list of thumbnails for each file. Click the blue icon on the thumbnail and tab “General Video” > “MKV Video” or “MKV HD Video” to set MKV as the output format.

choose mkv

Step 4Edit the files (Optional)

Click editing icon to edit the videos according to your needs. In the popped-up window, you can trim the video, crop the video, add effects, rotate the video, add watermark, add subtitles, adjust volume. Once done, click “Save”.

edit the video

Step 5Convert MP4 to MKV Mac

Finally, simply click the convert button at the bottom right corner to start the converting process.

On Windows

Aimersoft Video Converter Ultimate for Windows can easily help users to convert MP4 to MKV on Windows. In addition to MP4, it can also convert MOV, WMV and other 500+ digital formats. When you use it, you will find that it will provide you with fast converting speed and make a video in high quality. Besides, if your uploaded video is too large, it can help you to compress it to a smaller size. However, you cannot enjoy all of these benefits if you are not a pro-version user.


  1. Support a wide range of input formats
  2. Fast converting speed
  3. Provide videos in high quality


  1. All these Pros are included in the paid version

Guides on how to convert MP4 to MKV on Windows with Aimersoft

  1. Download the software and install in on your computer.

  2. Click “+ Add Files” at the top left corner of the program to select the videos that you want to convert and upload them into the program.
  3. After loading, they will appear in the interface as thumbnails. Click the output icon of the “Target” box, it will pop up a new window for you to choose the output format. Click “Videos” on the top line and then find MKV and choose it. 
    convert mp4 to mkv on windows with aimersoft
  4. Click the blue “Convert All” button at the bottom right corner to begin the work.

Free MP4 to MKV video converters


VLC Media Player is famous for a free and open-sourced multi-platform media player, which can be also used as a video converter. Compared with professional converters, it only supports converting a few digital files such as MP4, OGG, MP3, etc. But as a free converter, it does a decent job in converting MP4 to MKV, including easy to use, converting the files faster than its similar products.


  1. Free
  2. Available on multiple platforms


  1. Only a few digital audio and video formats are supported
  2. Can’t batch convert multiple videos
  3. Weak customization features
  4. Convert slowly when the file is large

Guides on how to convert MP4 to MKV for free with VLC

  1. Download and install the software.
  2. Open it, click “File” > “Convert / Stream” to upload the MP4 video that you want to convert it to MKV. Then, it pops up a new window for you to do the next steps. 
    upload videos with vlc
  3. Head to “Choose profile” tab to choose MKV as the output. You may be confused that you don’t see the “MKV” option when you click the drop-down menu of the output list. Don’t worry, click the next “Customize” button, select “MKV” on “Encapsulation”.
    choose mkv as output format
  4. Then, go to the “Choose destination” tab, click “Save as File” and then “Browse” to set the output name and destination. Once done, click “Save” back to the original interface. 
    edit file name and destination with vlc
  5. Finally, click the blue “Save” button at the bottom right corner to start the conversion process.


HandBrake is an open-source video transcoder that is available on Linux, Windows and Mac for free. It can not only deal with most common digital files, but also can handle DVDs and Blu-ray sources that don’t have copy-protection. When you use HandBrake to convert MP4 to MKV, you will be surprised that it can scan and convert videos in batches. However, it is more complicated than the usual converters, causing many users don’t figure out how to batch convert videos with HandBrake.


  1. Free
  2. Support batch converting MP4, MPEG-4, AAC, etc.


  1. Not friendly to novices because of the complicated interface
  2. The conversion speed needs to be improved

Guides on how to convert MP4 to MKV for free with HandBrake

  1. Make sure get the software on your computer.
  2. Open HandBrake, click “Open source” button at the top left corner to upload the MP4 video that you want to convert.
  3. Head to “Summary” tab, click the drop-down icon of the “Format” box and select “MKV” as the output format.
    choose mkv with handbrake
  4. If you have multiple MP4 videos, you can click the “Add to Queue” button to add the video to queue and then upload other MP4 videos one by one by repeating this step. 
    batch convert video with handbrake
  5. After done, go to the bottom of the interface, respectively edit the output file name and set the location at the according position.
  6. Finally, click “Start” or “Start queue” at the top to begin the conversion process.

Online MP4 to MKV video converters

CloudConvert is an excellent online converters that supports converting almost all kinds of file formats, including audio, video, document, image, etc. Thanks to the simple and straightforward interface, it allows you to easily procure high-quality videos with simple steps even if you use it for the first time. Many online converters are only permitted to convert the file under 100 MB or 200 MB for free, CloudConvert allows users to convert the file up to 1 GB for free, offering great convenience to the public.


  1. Support converting 200+ file formats
  2. Convert videos in batches
  3. Easy to use with clear interface
  4. Can convert videos without registration


  1. Have no editing tools

Guides on how to convert MP4 to MKV online with Cloudconvert

  1. Open a browser on your computer, input “” into the search bar and head to its official web page. 
    convert interface with cloudconvert
  2. You can choose to set the input (MP4) and output (MKV) format in advance.
  3. Then you only need to upload the MP4 file by clicking the red “+ Select File” button. If you have multiple files need to convert, you can upload them one by one by clicking “+ Add more files” button.
  4. After uploading all files, simply click the red “convert” button at the lower right corner to start the work. 
    convert mp4 to mkv with cloudconvert

More online MP4 to MKV video converter alternatives

1. Online-Convert MP4 to MKV Video Converter is a convenient online video converter that allow you to convert various video formats under 200 MB for free. When you open its page, you will see a list of different conversion formats such as “convert to MKV”, “convert to MP4”, “convert to AVI”, etc. Unlike common online converters, it provides you with editing features, allowing you to change screen size, video bitrate, frame rate, video/audio codec, video/audio quality, cut/crop/rotate the video, etc. 


2. Convertio supports converting 300+ file formats, encompassing Archives, Audios, Documents, EBooks, Videos, etc. It is pretty easy to use it to convert MP4 to MKV with a few clicks. Similar to some software, it features a editing function that allows users to edit the videos such as changing the codec, frame rate, video quality and so on. Plus, it can batch converting several files to save your time. However, the biggest issues of it is that it only support the file under 100 MB for free.

3. ConvertFiles

ConvertFiles is an ordinary free online converters that helps you to convert a large number of file formats. One should know at first is that it currently can only convert the files up to 250 MB for free. It is easy to use with only three steps and the steps are displayed below the conversion section. Therefore, if you have a couple of small files to convert, you can choose this simple and reliable online converters to make a decent work.


A comprehensive comparison between Cisdem Video Converter and free/online converters

Features Cisdem Video Converter Free Video Converters Online Video Converters
Can convert MP4 to MKV and other various  formats Yes Limited formats Limited formats
Convert videos with original quality Yes, it can also provide video in higher quality. Yes Yes
Conversion speed Fast Slow Slow
Compatible to different devices Yes Limited support Limited support
Provide powerful customization features Yes No No
Batch convert the file Yes Some can't Only a few can
Can deal with the large file Yes Yes Have size limited

Through this chart, it is obviously more reliable to choose a professional video converter to complete your task, so that you will experience the best conversion service.

Free Download

Final words

After knowing so much about MP4 to MKV converter, many people still prefer to use online converters because of free and convenient. The truth is that online video converters have high requirements for a stable internet connection. It is annoying that online tools don’t respond to your actions due to poor internet conditions.

On the contrast, a professional video converter can sweep this issue out and pay back you with an amazing experience. You can edit the videos as your like and batch convert them quickly without size limitation, and give you the high quality videos.

Megan Charles
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Megan has an impressive deal of experience with Mac software and has the ability to explain tech stuff in a simplified, straightforward and easy to understand way.

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